这里基于Javascript实现会旋转的圆圈,有点三维变幻的效果,立体感很强,代码主要是基于JS,学习Js脚本编程来说,是个学习JS生成动画的好范例。
运行效果如下图所示:
具体代码如下:
<html> <head> <title>旋转的圆圈</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head> <body> <script language="JavaScript"> amount=ybase=15; Color='#ffaaff'; GlowColor='#ff00ff'; xbase=-70; step=c=0.05; TrigSplit=360/amount; xpos=ypos=currStep=Ci=0; for (i=0; i < amount; i++) document.write('<div><B>.</B></div>'); function running(){ var MY=document.body.scrollTop+document.body.clientHeight/2 + document.body.clientHeight/2.8*Math.cos((Ci)/4)*Math.cos(Ci/10); var MX=document.body.scrollLeft+document.body.clientWidth/2 + document.body.clientWidth/2.4*Math.sin((Ci)/6)*Math.sin(Ci/20); ypos=MY; xpos=MX; for (i=0; i < amount; i++){ var d=Div[i].style; if (d.pixelTop > ypos+2){ d.fontSize=18; d.paddingTop=7; d.filter='glow(color='+GlowColor+', strength=7)'; if (d.pixelTop > ypos+10){ d.fontSize=15; d.paddingTop=10; d.filter='glow(color='+GlowColor+', strength=5)'; } } else{ d.fontSize=25; d.paddingTop=0; d.color=Color; d.filter='glow(color='+GlowColor+', strength=8)'; } d.top=ypos+ybase*Math.sin(currStep+i*TrigSplit*Math.PI/180); d.left=xpos+xbase*Math.cos(currStep+i*TrigSplit*Math.PI/180); } Ci+=c; currStep+=step; setTimeout('running()',20); } running(); </script> </body> </html>